Estimate distance the way a rifle scope does — measure how many mils (or MOA) a target of known size covers, and the math gives you the range. Work the numbers with the calculator, then drill your eye in the trainer: read a target in the reticle and call the range. Pairs with the Ballistics Calculator and Target Generator.
Enter the target's real size and what it measures in your reticle to get the range — or enter a range to see what it should measure.
A target of known size sits at an unknown range. Read how many mils it covers against the dots, work the range, and enter your call — drag the target to line it up with the dots. The closer you are, the better your score.
For training and estimation. Reticle ranging is an approximation; confirm distance with a rangefinder when you can, and always know your target and what lies beyond it.
Range a target of known size by how much of the reticle it covers — and drill the skill.
A rifle scope can measure distance: a target of known size covers fewer mils (or MOA) the farther away it is, so range = size ÷ how much it subtends. This tool does the math both ways and then trains your eye.
The formula, spelled out under the result: range (yd) = size (in) × 27.78 ÷ mils (metric: × 10 per cm; MOA uses 95.5).
Reticle ranging needs no batteries and works when a rangefinder won’t, but a small error in the mil read becomes a large error in range at distance — that’s the whole reason to drill it. When you have a laser rangefinder, trust it over a reticle estimate. Estimation only; always confirm your target and what lies beyond it.
